HG/T 20592  法兰盖 BL 100-16 RF)81000-06

BL100-16RF)81000-06

DN65-PN16 SO RF Ⅱ

WN 125(B)-16 RF S=4

wn400-600 rf s=16

WN 50(B)-16 RF S=65 RJ=F-1@RF8@S02&32htm6 RF

WN 80(B)-16 RF S=4.5

PL 20(B)-16 RF

PJ/SE150(B)-16rf

wn500(b)-25mRF5 S=20RF

PL 125(B)-16 RF �N@ch4B50@RF0@RF=3 S rf 1JsRF@FF=